<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="layui/css/layui.css"  media="all">
    <script src="layui/layui.js" charset="utf-8"></script>
</head>
<body>
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
    <legend>常规使用：普通图片上传</legend>
</fieldset>

<div class="layui-upload">
    <button type="button" class="layui-btn" id="test1">上传图片</button>
    <div class="layui-upload-list">
        <img class="layui-upload-img" id="demo1">
        <p id="demoText"></p>
    </div>
</div>
</body>

<!-- 注意：如果你直接复制所有代码到本地，上述js路径需要改成你本地的 -->
<script>
    layui.use('upload', function() {
        var $ = layui.jquery
            , upload = layui.upload;
        $.post('/upload',{},function (data) {

        });
        //普通图片上传
        var uploadInst = upload.render({
            elem: '#test1'
            , url: '/admin/upload'
            , before: function (obj) {
                //预读本地文件示例，不支持ie8
                obj.preview(function (index, file, result) {
                    $('#demo1').attr('src', result); //图片链接（base64）
                });
            }
gy ijnhu8ygv ty7bhi9kol                //如果上传失败
                if (res.code > 0) {
                    return layer.msg('上传失败');
                }
                //上传成功
            }
            , error: function () {
                //演示失败状态，并实现重传
                var demoText = $('#demoText');
                demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-mini demo-reload">重试</a>');
                demoText.find('.demo-reload').on('click', function () {
                    uploadInst.upload();
                });
            }
        });
        console.log(uploadInst);
    });
</script>
</html>